ADVANCE FOR MONDAY, JULY 30 AND THEREAFTER - FILE - This April 2, 2012 file photo shows an "e-lane" sidewalk graphic displays in view of City Hall, in Philadelphia. Philadelphia Mayor Michael Nutter used April Fool's Day to have a little fun with what he says is a real problem: distracted walking. City officials painted lines and oblivious stick-figure pictures on one stretch of John F. Kennedy Boulevard near City Hall as a jab at pedestrians who keep their eyes on their cellphone screens and not their surroundings. Across the country on city streets, in suburban parking lots and in shopping centers, there is usually someone strolling while talking on a phone, texting with their head down, listening to music, or playing a video game. The problem isn't as widely discussed as distracted driving, but the danger is real. (AP Photo/Matt Rourke, File)